Comparison

Pyramid Calculator Pro vs InkDeck

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pyramid Calculator Pro

Calculate all necessary quantities for a pyramid by inputting a few values like angles and lengths. It displays formulas, shows step-by-step solutions, and supports decimals and fractions. Calculations are saved in history and can be shared.

Highlights
  • Calculate all pyramid quantities
  • Display formulas
  • Step-by-step solutions
  • Decimal and fraction support
  • Calculation history
  • Shareable solutions
  • Input validation
Features
Read full description

The best app to calculate all quantities of a pyramid. You must enter some quantities like an angle and a length. The algorithm searches the formulas of the missing quantities, shows them and calculates the results. The length of the decimal place can be changed. The algorithm shows when rounding or wrong values lead to an opposition. Decimals and fractions are supported. The solution is shown step by step. All calculations are stored in the history. The final solution can be shared. [ Contents ] - all important quantities for the pyramid - formulas for all important quantities of a pyramid - infographic to illustrate the topic - search bar to find the desired quantity - history function to save the input - detailed solution - positive numbers, decimals and fractions are supported - no ads! [ Usage ] - there are fields for entering values using a special keyboard - press the check mark button at the bottom right to start the calculation - if values are missing, all fields will be marked orange - if the values are wrong (e.g. negative lengths), the affected field will be highlighted red - if a value is no number, it is highlighted in red - the entries in the history can be deleted or sorted - if you select an entry in the history, it will be automatically loaded for the calculation - the whole history can be deleted by pressing a button - solutions can be shared [ Math conditions ] - each value must be greater than zero - each angle must be less than 90° - the base area is rectangular (i.e. the angles of the base area are 90°) - α+β must be greater than 90°

About

InkDeck

Create and study with interactive flashcards using handwriting, typed text, and images. Engage with your material through five study methods and six learning games. Track your progress visually and sync across devices without an account.

Highlights
  • Handwritten and typed text on cards
  • Spaced repetition study schedules
  • Five study methods (Review, Quiz, Typing, Match, Cloze)
  • Six learning games
  • Import Anki decks
  • Progress tracking and stats
  • iCloud sync across devices
Features
Read full description

InkDeck is the flashcard app you write by hand. Every card is a real drawing canvas — sketch diagrams, write formulas and practice characters with Apple Pencil or your finger, on iPhone, iPad and Mac. Free to start. InkDeck Pro is a one-time purchase — no subscription. STUDY FIVE WAYS • Review — flip and rate yourself; spaced repetition schedules every card at the right moment, with reminders so you never miss a session • Quiz — four-choice questions with instant feedback • Typing — type the answer; fuzzy matching forgives small typos • Match — pair terms in Quick Fire, Batch Submit or Sliding Window • Cloze — fill in the blank from context SIX GAMES MADE FROM YOUR CARDS Card Shooter, Balloon Pop, Pair Hunt, Word Forge, Deckle and Letter Trail turn any deck into a game, so review stops feeling like review. WRITE IT, DON'T JUST TYPE IT • Handwriting and typed text on the same card • Lasso to select, move and resize your ink • Images, backgrounds and color gradients • Record audio for pronunciation practice • Markdown for formatted text • Pick how your cards flip BRING YOUR DECKS Import Anki .apkg decks with their images and audio, or start from a CSV file. Ask the AI tool you already use to write cards, then paste them straight in. Share decks with the .inkdeck format. TRACK YOUR PROGRESS A calendar heatmap, review history, accuracy stats and retention curves show exactly how you're improving. Keep your study streak alive. EVERY DEVICE, NO ACCOUNT Your decks sync through iCloud across iPhone, iPad and Mac. No sign-up. Available in 11 languages: English, Spanish, French, German, Japanese, Korean, Portuguese, Russian, Turkish, Arabic and Chinese. The free plan includes 3 sets of up to 10 cards each. InkDeck Pro removes the limits with a single purchase. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://inkdeck.gittrics.com/privacy

Screenshots

Pyramid Calculator Pro4 screens
InkDeck4 screens

Verdict

The call

The clearest difference is price: InkDeck at Free against Pyramid Calculator Pro's $2.99. InkDeck also leads on update cadence (every 2 weeks vs every 5 weeks). Pyramid Calculator Pro's advantage is rating (5.0 vs 4.0) and in-app purchases (none vs 2). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

InkDeck is free to download; Pyramid Calculator Pro costs $2.99 up front. InkDeck sells 2 in-app purchases, starting at $2.99 per month. Pyramid Calculator Pro asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Pyramid Calculator Pro holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

UpkeepUpdate frequency

Pyramid Calculator Pro ships an update every 5 weeks, InkDeck every 2 weeks. The most recent releases landed on October 24, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 4 level
Pyramid Calculator Pro versus InkDeck: the parameters behind the verdict, then further details
ParameterPyramid Calculator ProInkDeck
Price$2.99Free — better
Rating5.0 (2 ratings) — better4.0 (1 ratings)
Number of ratings2 — better1
Update frequencyEvery 5 weeksEvery 2 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS15.0 — better16.0
Further details — not scored
Size182 MB23 MB
Age rating4+4+
DeveloperGlindemann, Sennoun, Langer GbRMuhammad Mukhtar

Customer experience

Pyramid Calculator Pro

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

InkDeck

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pyramid Calculator Pro

No in-app purchases

2 purchases

InkDeck

Subscriptions1
  • App Access For 1 Month7 Days trial$2.991 Month
One-time1
  • Unlimited cards$7.99

Questions

Is Pyramid Calculator Pro free?
Pyramid Calculator Pro costs $2.99, with no in-app purchases.
Is InkDeck free?
InkDeck is free to download, with in-app purchases available.
Which has better reviews, Pyramid Calculator Pro or InkDeck?
Pyramid Calculator Pro is rated higher. Pyramid Calculator Pro averages 5.0 out of 5 from 2 ratings, while InkDeck averages 4.0 from 1 ratings.
Do Pyramid Calculator Pro or InkDeck have ads?
Neither Pyramid Calculator Pro nor InkDeck shows ads.
Which is updated more often, Pyramid Calculator Pro or InkDeck?
Pyramid Calculator Pro ships an update every 5 weeks, and InkDeck every 2 weeks. Most recently, Pyramid Calculator Pro was updated on October 24, 2026 and InkDeck on October 30, 2026.

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